New model implemented

I use now datas from ARPEGE model from Météo France.
Height resolution is better with more surface levels in the range 2m to 1500m.
Horizontal resolution is 7,5 km for Europe and 36 km for Pacific area.
Time forecast up to 102 hours.
Still need some adjustments on my side but good new source of data.

At this time only Europe area is computed. But the other areas will be soon available.